80 Series Diff Lock Box for ARB
Air Lockers.
Run your ARB air lockers using the factory 80 Series diff lock switch with factory dash light function.
Plug-and-play install, factory dash light function, and zero wiring mess.
Overview
Factory front and rear diff lockers were optional add-ons rather than being standard on the 80 Series. While most vehicles do not have the locker actuators, the wiring for them exists in every vehicle.
This module allows you to connect aftermarket ARB lockers and compressor to the factory Toyota wiring harness so it can be operated using the factory diff lock switch while also illuminating the dash lights inside the instrument cluster. This module completely eliminates the messy rocker switches ARB provide.
This module has been designed to be a plug-and-play solution. Simply plug one connector into the factory diff lock ECU connector and the other into the standard 4-pin ARB compressor plug. No cutting, soldering, or crimping required.
Bolts directly to the factory mounting points inside the passenger-side kick panel — no drilling required. ABS material for temperature resistance.
What’s Included:
- Diff Lock Box Module
- Dash Indicator Bulbs (in case they are missing from your dash)
- M6 Mounting Nuts
- Installation Sheet
- Optional genuine Toyota diff lock switch (Part No. 84725-60020)
Works with all ARB compressors
Compressor Model
- ARB CKMA12/24 (single, brushed)✓
- ARB CKMTA12/24 (twin, brushed)✓
- ARB CKBLA12 (single, brushless)✓
- ARB CKBLTA12 (twin, brushless)✓
- ARB CKSA12 (single, 15A ignition-switched)✓
Frequently asked questions
Will this fit e-lockers?
No, this module is designed specifically to fit an ARB air compressor harness.
How does the compressor turn on?
The compressor automatically turns on when the rear locker is selected using the diff lock switch. Selecting the FR-RR position then activates the front locker while keeping the compressor and rear locker solenoid energised.
Can I manually turn the compressor on to pump up my tyres?
No, you cannot manually turn the compressor on, as the ARB on/off rocker switch is eliminated. The module is designed to mimic factory function.